FR767214A - - Google Patents
Info
- Publication number
- FR767214A FR767214A FR767214DA FR767214A FR 767214 A FR767214 A FR 767214A FR 767214D A FR767214D A FR 767214DA FR 767214 A FR767214 A FR 767214A
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J21/00—Vacuum tubes
- H01J21/02—Tubes with a single discharge path
- H01J21/06—Tubes with a single discharge path having electrostatic control means only
- H01J21/10—Tubes with a single discharge path having electrostatic control means only with one or more immovable internal control electrodes, e.g. triode, pentode, octode
- H01J21/12—Tubes with variable amplification factor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0032—Tubes with variable amplification factor
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR767214A true FR767214A (fr) | 1934-07-11 |
Family
ID=1551409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR767214D Expired FR767214A (fr) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR767214A (fr) |
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0
- FR FR767214D patent/FR767214A/fr not_active Expired